A proper solar house design has a lot of glazing on the south side,
to let in the sun. To keep out the summer sun, a properly designed
overhang is needed over the windows. Building with SIPs is different,
since there is no access to the wall framing. The only way to attach
something to the wall is the bolt on ledgers, then hang from them with
ugly Simpsons brackets. Will have to figure out a way to cover up the
Simpsons.